CVE-2026-49460 — pypdf: Inefficient decoding of FlateDecode PNG predictor streams
pypdf is a free and open-source pure-python PDF library. Prior to 6.12.2, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires acc…
Published: 2026-06-22 · CVSS: 5.1 · CVSS 4.0
pypdf is a free and open-source pure-python PDF library. Prior to 6.12.2, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which uses the /FlateDecode filter with a PNG predictor. This vulnerability is fixed in 6.12.2.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7